Driving-cylinder for mules and spinning-frames.



No. 770,900. PATENTED SEPT, 27, 1904, H. B. GBTGHELL. DRIVING CYLINDER FDR MULES AND SPINNING FRAMES.

APPLICATION E'ILED FEB. 24. 19%. I

N0 MODEL.

wwamtoz NITED STATES Patented September 27, 1904.

PATENT OFFICE.

DRIVING-CYLINDER FOR IVIULES AND SPINNING-FRAMES.

SPECIFICATION forming part of Letters Patent No. 770,900, dated September 27, 1904.

Application filed February 24, 1904. Serial No. 195,096. (No model.)

To all whom, it may concern:

Be it known that I, HERBERT E. GE'roHELL, a citizen of the United States, residing at VVoonsocket, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in Driving-Cylinders for Mules and Spinning-Frames, of which the following is a specification.

My invention pertains to sheet-metal driving-cylinders for the spindles of mules and spinning-frames; and it has for its object to provide a sheet-metal driving-cylinder having a seam which extends in a helical line or spiral as contradistinguished from a longitudinal seam disposed parallel to its axis, the seam which extends in a helical line or spirally being advantageous over the straight parallel seam in that it enables the cylinder to better withstand torsional strain and by preventing sagging of the cylinder materially prolongs the usefulness of the cylinder.

With the foregoing in mind the invention will be fully understood from the following description and claim, when taken in connection with the accompanying drawings, forming part of this specification, in which Figure 1 is an elevation illustrating a portion of a sheet-metal driving-cylinder constituting the present and preferred embodiment of my invention. Fig. 2 is a longitudinal central section of the cylinder portion as the same appears when turned to place the seam on the opposite side with reference to the side shown in Fig. 1, and Fig. 3 is a transverse section taken in the plane indicated by the line 3 3 of Fig. 1.

Similar letters of reference designate corresponding parts in all of the views of the drawings.

The driving-cylinder is formed of sections A A, one of which is arranged with its end in the end of the other, as shown in Figs. 1 and 2. The sections A A are identical in construction, and therefore a detailed description of the complete section shown at the right of Figs. 1 and 2 will suifice to impart a definite understanding of both sections. The

said complete section A is formed of a single piece of sheet metal bent into circular form and is peculiar in that it has ends disposed at right angles to its axis and a seam B, which extends in a helical line or spirally between said ends. In virtue of the said seam the cylinder is rendered stiff and strong, and hence is well adapted to resist tortional strain, with the result that the liability of the'cylinder sagging or getting out of line is reduced to a minimum. In addition to the spirally-extending seam B the section A is preferably provided with strengthening-heads C, having the usual central apertures a, and one of its ends is reduced in diameter, as shown at the left of Fig. 2, this latter in order to enable the said end to fit into the end of the adjacent section.

Notwithstanding the practical advantages which I have ascribed to my peculiar drivingcylinder, it will be apparent that the cylinder is simple in construction and may be produced quite as cheaply as the ordinary driving-cylinders extant.

I have entered intoa detailed description of the present embodiment of my invention in order to impart a full, clear, and exact understanding of the same. I desire it understood, however, that I do not confine myself to the specific construction shown and described, as such changes or modifications may be made in practice as fairly fall within the scope of my invention as claimed.

While designed more particularly for driving the spindles of mules and spinning-frames, my novel cylinder may obviously be used on all machines where driving-cylinders are used without involving departure from the scope of my invention.

Having described my invention, what I claim, and desire to secure by Letters Patent,

The herein-described driving-cylinder made up of sheet-metal sections arranged with the end of one in the end of the other; each of the said sections having ends disposed at right angles to its axis, and also having a seam which extends in a helical line or spirally between its ends.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HERBERT E. GETOHELL.

Witnesses GEO. W. SPAULDING, CHARLES W. 000K. 

